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[SCSI] libsas: continue revalidation 

Continue running revalidation until no more broadcast devices are
discovered.  Fixes cases where re-discovery completes too early in a
domain with multiple expanders with pending re-discovery events.
Servicing BCNs can get backed up behind error recovery.

Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2012-06-21 23:36:15 -07:00 committed by James Bottomley
parent b2311a2875
commit 26f2f199ff
1 changed files with 4 additions and 4 deletions
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8
drivers/scsi/libsas/sas_expander.c
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@ -2114,9 +2114,7 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
struct domain_device *dev = NULL;
res = sas_find_bcast_dev(port_dev, &dev);
if (res)
goto out;
if (dev) {
while (res == 0 && dev) {
struct expander_device *ex = &dev->ex_dev;
int i = 0, phy_id;
@ -2128,8 +2126,10 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev)
res = sas_rediscover(dev, phy_id);
i = phy_id + 1;
} while (i < ex->num_phys);
dev = NULL;
res = sas_find_bcast_dev(port_dev, &dev);
}
out:
return res;
}